Vacuum cleaning apparatus



June 23, J. H. ADAMS VACUUM CLEANING APPARATUS 2 Sheets-Sheet l Filed March 15, 1955 INVENTOR obs ep/z Adams ATTORNEY JUHQ 23, 193. J. H ADAMS 2,@44,?

VACUUM CLEANING APPARATUS Filed March 1:5, 1935 2 Sheets-Sheet 2 g INVENTOR Jase 29721 l7 Aai'avzs ATTO R N EY STATES Patented June 23, 1936 vAcUUiu CLEANING minim Joseph B. Adams, Detroit, Mich. Application March 13, 1935, Serial No. 10,783

This invention relates to vacuum cleaning a9- paratus, and particularly to apparatus for vacuum cleaning furnaces and the like. I

An object of the invention is to draw dustladen or soot-laden air into a settling chamber casing, the casing providing a dust or soot settling chamber beneath said bag.

Another object is to mount the motor driven fan upon a cover removably engaging the open top of said casing, whereby the fan and motor are readily removable for inspection or repairs.

Another object is to adapt the dust or soot gathered by a vacuum cleaning apparatus to set tle into a receptacle housed in the base of said apparatus and readily removable from said base for disposal of accumulated dust or soot.

These and various other objects the invention attains by the construction hereinafter described, and illustrated in the accompanying drawings, wherein:

Fig. 1 is a view of the apparatus in vertical axial sectional elevation.

Fig. 2 is a relatively transverse vertical axial sectional view.

Fig. 3 is a front view of the apparatus partially in axial section and showing the air filter and the unit formed by the fan motor and cover of the apparatus partially withdrawn from the casing thereof.

Fig. 4 is a cross sectional view taken upon the line 4-4 of Fig. 2.

Fig. 5 is a fragmentary vertical section showing a spring latch device for maintaining air sealing engagement of the cover and casing.

In these views, the reference character I designates a sheet metal open-topped casing preferably of cylindrical form, which is rigidly mounted upon and in open communication with a rec-*- tangular base 2. Said base houses an open-topped sheet metal receptacle 3 for dust or soot, which receptacle may be slidably withdrawn from the base through the open front of the latter. The

front wall of said receptacle normally forms a closure for the front opening of the base, and is adapted to be held in air sealing engagement with the baseby spring latch devices 312 laterally pivoted upon the base (see Fig. 4) and hooked to exert rearward pressure on said receptacle. The top edge of the casing I is exteriorly rolled about a wire reinforcement as indicated at t. Suspended within the casing I is an air filter bag or diaphragm! formed of suitable fabric, the upper margin of which is outwardly extendm as indicated at 6, for engagement between the reinforced edge of the casing I and a sheet'metalcover I. The latter is adapted to-be held in air sealed engagement withthe casing by a plurality of spring latch devices '8 pivoted laterally on thecasing and hooked to engage over the cover. Preferably, an annular gasket 8,.of any suitable yieldable material is secured to the under face of said cover to seat on the outturned edge 6 of the '15 filter bag.

Secured to the bottom face of the cover I are four hangers I0 formed of strap iron and arranged in opposite pairs. At approximately midheight of the casing I, said hangers are rigidly connected by a pair of relatively transverse strap iron supports II on which is mounted fast a platform I2. Axially of the casing, a hook I3 is secured to the supports I I therebeneath, its shank interconnecting the platform and said supports. fietachably engaging said hook is a loop I4 cared centrally and interiorly by the bottom of the bag 5, whereby said bottom is held raised within the bag in an approximate dome form. To prevent suction within the bag from drawing up its lower portion and. interfering with the described position of the bag, the hangers ill have portions projecting below the supports II and into the lower portion of the casing I, and bent to a U-form as indicated at I5, their ends being riveted to the supports II inwardly of the ends of said supports. Thus the extensions I5 hold the wall of the bag stretched downwardly to the point of juncture with the dome-shaped bottom portion.

Mounted on and secured to the platform I2 is a fan It and an electric motor I! driving said fan, the fan having the usual lateral inlet I8 and having its usual tangential outlet connected to a pipe I9 projecting upwardly through the cover I and 46 having air sealed engagement with the cover. Into one of the corner portions of the base 2, a flexible air let tube 20 opens downwardly, said tube havin a suitable length to provide for its insertion in a furnace flue or for extending it to any point from which dust, dirt, soot, or ashes are to be removed.

In the use of the described apparatus, when. the motor I! is energized, the fan I6 discharges I air from the casing I and consequently draws air 66 upwardly through the filter bag 5. The vacuum tendency thus created in the lower portion of the casing I and in the base 2 creates a powerful suction in the intake tube 20 whereby any soot or the like adjacent the inlet end of said tube will be drawn into the apparatus. Within the apparatus, the foul air will be aflorded a very considerable expansiomwhereby the soot or the like will be free to settle in the receptacle I; The filter bag in its described highly extended form provides a suflicient area to allow the upward passage of air at a quite low velocity, whereby there is eliminated any tendency of the lighter particles of soot or dust to collect on the bag and obstruct the air flow therethrough. I

Mounting the fan and motor upon the cover and within the bag, as described, produces a compact and relatively inexpensive structure, and

further provides for very convenient removal of the fan and motor for inspection, oiling, or repairs. Clamping of the bag in its position of use by engagement of the bag margin between the cover and the edge of the casing also permits ready removal of the bag for any purpose.

While the apparatus has been particularly described in its application to use in cleaning furnaces, it is to be understood that said apparatus may be put into numerous other uses.

The invention is presented as including all such modifications and changes as come within the scope of the following claims.

What I claim is:

1.A vacuum cleaning apparatus comprising an open-topped casing having a dust removal opening in its lower portion, a member normally closing said openingand adaptedto uncover the same, a cover engageable with the open top of said cosine. a plurality of hangers secured to the cover and adapted to extend downwardly within the casing, a platform jointly carried by said 5 hangers, a motor fan unit mounted on said platform, an outlet fitting for said fan extending through the cover, an air filter bag having air sealing engagement at its mouth with the top portion of the casing wall and depending within thecasing in surrounding relation to said hangers, said bag having its bottom upwardly domed, means attaching the domed portion of the bag to said platform, and downward extensions formed by said hangers below said platform maintaining the bag downwardly distended around its domed portion.

2. A vacuum cleaning apparatus comprising an open topped casing, a cover engageable with the open top of the casing, a plurality of hangers secured to the cover and adapted to extend downwardly within the casing, a platform Jointly carried by said hangers, a motor fan unit mounted on the platform, an air filter bag having air sealing engagement at its mouth with the top 5 portion of the casing wall and depending within the casing in surrounding relation to the hangers and having its bottom upwardly domed, means attaching the domed portion of the bag to the platform, and downward extensions formed by the hangers below the platform, maintaining the ltiag downwardly distended around its dome porion.

JOSEPH H. ADAMS. 

